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• Page 46 of 52 <br /> alscience <br /> =nvironmental Quality Control - LCS/LCS Duplicate <br /> aboratories, Inc. <br /> GeoSyntec Consultants Date Received: N/A , <br /> 475 14th Street, Suite 450 Work Order No: 11-02-0383 <br /> Oakland, CA 94612-1940 Preparation: EPA 5030C <br /> Method: EPA 82606 ' <br /> Project: Newark Sierra Stockton /WR1194 <br /> Date Date LCS/LCSD Batch ' <br /> Duality Control Sample ID Matrix Instrument Prepared Analyzed Number <br /> 099.14-001.3,620 Aqueous GC/MS XX 02/08/11 02/08111 110208L01 <br /> Parameter LCS%REC LCSD%REC %REC CL ME CL RPD RPD CL Qualifiers <br /> Benzene 97 100 80-120 73-127 3 0-20 <br /> Carbon Tetrachloride 83 87 66-138 54-150 5 0-20 <br /> Chlorobenzene 93 97 80-120 73-127 4 0-20 <br /> 12-Dibromoethane 90 94 80-120 73-127 4 0-20 ' <br /> 1,2-Dichlorobenzene 91 95 80-120 73-127 4 0-20 <br /> 1,2-Dichloroethane 95 98 80-129 72-137 3 0-20 <br /> 1,1-Dichloroethene 84 96 71-131 61-141 12 0-20 ' <br /> Ethylbenzene 93 96 80-123 73130 4 0-20 <br /> Toluene 97 100 79-121 72-128 3 0-20 <br /> Trichloroethene 99 102 80-120 73127 3 0-20 <br /> Vinyl Chloride 88 90 70-136 59-147 2 0-20 , <br /> Methyl-t-Butyl Ether(MTBE) 87 91 72-126 63135 4 0-22 <br /> Total number of LCS compounds: 12 <br /> Total number of ME compounds: 0 ' <br /> Total number of ME compounds allowed: 1 <br /> LCS ME CL validation result: Pass <br /> RPD <br /> ����,V v• V"'`/ •`Relative Percent Difference, CL-Control Limit <br /> 7440 Lincoln Way, Garden Grove, CA 92841-1427 . TEL:(714)895-5494 . FAX: (714)894-7501 ' <br />